Problema Solution
how much water must be added to 20 ounces of a 15% solution of argyrol to reduce it to a solution that is 10% argyrol
Answer provided by our tutors
Let x ounces of water be added.
Toal amount of pure argyrol in the 15% solution = 20 * 0.15 ounces = 3 ounces
In (20 + x) ounces of the 10% solution, the amount of pure argyrol = (20+x)*0.10 ounces
Now, (20+x)*0.10 = 3
20 + x = 3/0.10
20 + x = 30
x = 30 - 20
x = 10
So, 10 ounces of water must be added.